Yes, and I seem to have been wrong about their relationship. @abduhl pointed out that their agreement with drivers does say that they merely take a % of fares.[0] That agreement, though, seems to have been before the implementation of upfront pricing, so I don't know if the Technology Services Agreement had been modified.

[0] Page 4, sub-section (16) of the court documents https://arstechnica.com/wp-content/uploads/2017/04/uberdrver...